def batch_loss(self, batch_group: List[TensorDict],
for_training: bool) -> torch.Tensor:
"""
Does a forward pass on the given batches and returns the ``loss`` value in the result.
If ``for_training`` is `True` also applies regularization penalty.
"""
if self._multiple_gpu:
output_dict = training_util.data_parallel(batch_group, self.model,
self._cuda_devices)
else:
assert len(batch_group) == 1
batch = batch_group[0]
batch = nn_util.move_to_device(batch, self._cuda_devices[0])
output_dict = self.model(**batch)
try:
loss = output_dict["loss"]
if for_training:
loss += self.model.get_regularization_penalty()
except KeyError:
if for_training:
raise RuntimeError(
"The model you are trying to optimize does not contain a"
" 'loss' key in the output of model.forward(inputs).")
loss = None
return loss
def _run_model(self, batch_group):
if self.n_gpu_use > 1:
output_dict = training_util.data_parallel(batch_group, self.model,
self.device)
else:
assert len(batch_group) == 1
batch = batch_group[0]
batch = nn_util.move_to_device(batch, self.device[0])
output_dict = self.model(**batch)
return output_dict
def get_output_dict(self, batch_group: List[TensorDict], for_training: bool) -> Dict[str, torch.Tensor]:
"""
Does a forward pass on the given batches and returns the ``loss`` value in the result.
If ``for_training`` is `True` also applies regularization penalty.
"""
if self._multiple_gpu:
output_dict = training_util.data_parallel(batch_group, self.model, self._cuda_devices)
else:
assert len(batch_group) == 1
batch = batch_group[0]
batch = nn_util.move_to_device(batch, self._cuda_devices[0])
output_dict = self.model(**batch)
return output_dict
def batch_loss(self,
batch_group: List[TensorDict],
for_training: bool,
eval_metric=True):
"""
Does a forward pass on the given batches and returns the ``loss`` value in the result.
If ``for_training`` is `True` also applies regularization penalty.
"""
if self.trainer._multiple_gpu:
output_dict = training_util.data_parallel(
batch_group, self.trainer.model, self.trainer._cuda_devices)
else:
assert len(batch_group) == 1
batch = batch_group[0]
batch = nn_util.move_to_device(batch,
self.trainer._cuda_devices[0])
output_dict = self.trainer.model(**batch, eval_metric=eval_metric)
if for_training and eval_metric:
output_dict[
'regularization_penalty'] = self.trainer.model.get_regularization_penalty(
)
return output_dict
def batch_loss(self, batch_group: List[TensorDict],
for_training: bool) -> torch.Tensor:
"""
Does a forward pass on the given batches and returns the ``loss`` value in the result.
If ``for_training`` is `True` also applies regularization penalty.
"""
if self._multiple_gpu:
output_dict = training_util.data_parallel(batch_group, self.model,
self._cuda_devices)
else:
# if self._num_gradient_accumulation_steps == 1:
assert len(batch_group) == 1
batch = batch_group[0]
batch = nn_util.move_to_device(batch, self._cuda_devices[0])
output_dict = self.model(**batch)
# try:
# output_dict = self.model(**batch)
# wrappedmodel = ModelWrapper(self.model)
# processed_inputs = wrappedmodel.process_inputs(batch)
# output_dict = checkpoint(wrappedmodel, processed_inputs)
# except RuntimeError:
# print("Probably CUDA out of memory")
# return None
try:
loss = output_dict["loss"]
if for_training:
loss += self.model.get_regularization_penalty()
except KeyError:
if for_training:
raise RuntimeError(
"The model you are trying to optimize does not contain a"
" 'loss' key in the output of model.forward(inputs).")
loss = None
return loss